form.testData = [];
ratedVoltageRatio =
  refData.equipment.hightVollage / refData.equipment.lowVollage;
for (i = 0; i < form.gearsNumber; i++) {
  variationVollage =
    ratedVoltageRatio *
    (1 + ((form.ratedVoltageGear - i - 1) * form.variationRange) / 100);
  variationVollageShow = variationVollage.toFixed(3);
  form.testData.push({
    index: i + 1,
    variationVollage,
    variationVollageShow,
  });
}
